Electric bake oven



j. C. WOODSON.

ELECTRIC BAKE OVEN.

APPucAIloN F1LED1uNE25,1921.

www mm www N v m mw -INVENTOR James C7. Woaaso/z WITNESSES: fvg@ M. f/w M JQC. WOODSON.

ELECTRIC BAKE OVEN. 4

APPLICATION FILED luNE 25.1921.

1,425,620. Patented Aug. 15, 1922.

4 SHEETS-SHEET 2.

/ ATTORNEY 1'. c. woonsoN. ELECTRIC OVEN.

APPLICATION EILEDUNE 25, 1921.

INVENTOR 4 SHEETS-SHEET 3.

Patented Aug. 15, 1922.

' WlTNEssEs:

ATTORNEY l. C. WOODSON.

ELECTRIC BAKE OVEN.

A PPLICAHON HLED JUNE 25, i921.

atented Auf. 15, 1922.

4 SHEETS-SHEET 4.

UIL

INVENTOR James CWoodso/z l ATTORNEY Unirse stares T 0 all whom t may concern.'

.Be it known that I, JAMES C. VVooDsoN,y

a citizen .of the United States, and a resident of Mansfield,'in the county of Richland 'and' State of Ohio, have invented a new and use- -ful Improvementin Electric Bake Ovens,

of which the following is a specification.

My invention relates to electrically heated ovens and particularly bake ovens of thereel its Object to provide a bake oven ofthe above indi-cated character having a plurality of independently removable heat-insulating panels secured to a skeleton frame.

It is vhighlydesirable, in the ovens of the above indicated character, to employ a construction which permits of assembling the oven at the factory and of shipping it in this condition. In case the opening or doorway available for its installation is not sufficiently large to permit of it being moved therethrough in its entirety, it becomes highly desirable to disassemble the oven into the smallest possible number of parts to permit of moving the same through the available doorway` in order that the labor of disassembling or reassembling may be as small as possible.

.In practicing my invention, I provide a base frame composed of steel members of standard shape and dimensions and mount .thereon a heat-insulated bottom panel of the oven provided with members for supporting substantially the entire weight of the rest of the oven. I provide a plurality of two-part skeleton end-frames and maintain the same in spaced-apart `relation by means of suitable spacinor members. A bearing is provided in eac of the end frames in which'a rotatable shaft is located, upon which is secured a plurality of'reels having a plurality of trays mounted therebetween, upon which the material to be baked may be placed andl lrevolved in thel oven chamber by suitable vdriving mechanism.

I pro-vide a plurality removable heat-insulated double-wall panels .which are suitably secured'to the end frame strips are provided bef Suitable spacin tween the abutting bevelled. edges of the panels. Vlhite enamel for the outside of each of the heat-insulated panel members, the abutting orv adjacent.

to electrically heated type, and it has for .of independently.

.panels are provided wn srntenousa ELEOTBIO momenti.

| ELECTRIC naar. OVEN.

seria'i no. 480,289.

edges being covered. by means of suitable metal finishing strips. y

A door panel is provided with a counterweight to permit of opening the same easily and quickly, the inner surface of the door panel, ,when opened, providing a shelf in front of the oven to facilitate the insertion and removal of the material.

An electric heating means is located at the bottom of the oven chamber and may be controlled in any suitable or desired manner to automatically maintain the temperature at any predetermined value. i

In the drawings:

Specification of Letters Patent. Patented Aug, 1.5, 1922, Application filed June 25, 1921.

Figure 1 is a vie-w, in vert-ical 'lateral-section, of a reel type bake oven embodying my invention;

Fig. 2 is an enlarged view of a bottom portion` of the oven illustrated in' Fig. l;

Fig. 3 is a view, in longitudinal vertical section,- of a reel-type oven embodying my invention;

Fig. 4 is a top plan view of a botto-m back panel constituting a part of the oven embodying my invention;

Figs. 5 and 6 are views, in side and in end elevation, respectively, trated in Fig. 4;

of the panel illus- F ig. 7 is a top plan View of" one of the half end panels;

yF ig. 8 is a top plan view of the mentary half end panel;

Figs. 9 and 10 are views,'in end elevation, of the panels illustrate respectively, and

complein Figs. '7 and `S, p

Fig. 11 is a schematic view, in horizontal' section, illustrating the interitting of the end and the side panels.

A .fbase frame forlthe oven comprises a plurality of supporting members l, Whichare suitably connected by means of a plurality of longitudinally extending angle members 2 bolted thereto, and laterally extend;l

ing angle members 3. A plurality of meml bers 4, substantially of T-shape, are secured,

at` their ends,

A bottom panel 5 en the built-up base frame.

to the members 2 intermediate-N the supports 1. f i n f of the oven is locatedf The panel 5l com ris'es in 'eneral an u er metal Sheet f P a g i p 6 and a lower-metal sheet 7 spaced-apart relation by means of apl-u'ral.

ity4 of laterally extending spacing Inemberse..`

. v Y "1 Lf-EU'f i? "halves lbolted lto ether byk a plurality" of bolts 1l, the two ialves forminga member of' distorted octagonal contour, the Vertical dimension being snbstantially greater than 'the horizontal dimension. The two end v.frames'lO are maintained in spaced-apart "relation by means of a plurality of members 12 of angle section. bolted thereto at the bottom thereof, Vmembers 13 of angle section bolted thereto at the top thereofand a plu! 'ralityof members 14 substantially of channel section bolted thereto at the sidesy thereof.

1 A bearing `shell 15 is located in each of the end frames 10 fand supports afrotatable shaft 16. 'A plurality of reell frames 1T Y31o` means of bolts 19". secured thereto.

Y,are mounted in spaced'relation'on the shaft "16 and rsuitably secured thereto by means l A. plurality1 of trays 19v 'aresuspended between the reel frames 1T by of set i screvvs 18.

The construction employedis suc-l1 as to permit of rotating the shaftl andthe reel `frames' V17 to revolve material placedl uponr the vshelves 19 in the oven chamber. the mas terial remaining in asubstantially horizontall position.

\ l Suitable driving mechanismfor'the above ldescribed reel structure comprises a motor 2O mounted upon (a"bracket Q1 -secured againstfone end of the oven, and a speednreducing` train of gears (not shown),

l topermit of rotating the shaft 1 6 by hand` y employed.

located in a casing 2Q and serving to operatively connect the motor shaft and the shaft .16, arelatively high-speed reductionbelng A hand yWheel 23 is suitably connected to the speed-reducing mechanism incase this becomes necessary because of ;,the failure of the motor 20, orffor any other .-reason.

A plurality of electric heating elements .24 are'locatedl in the bottom o f the oven -chaniberrand may comprise any suitable orfdesired combination of resistor elements 25 andysupporting `frames 26.V In order to vequaliieylthe heating effect `of the elements Iride v'a haine-plate structure l morepartioularlyv described` and claimed` -Iin"my1oopending application, Serial Xo.`

24 rat each end of the oven chambere'l pro- 27 which is 11474326, filed June, a, 1921.

for the sides of VVAl plurality the' oven, are secured to the end 'frames mi and comprise a bottom ,any position thereof.

.if heat-insulated panels` back panel 28, a center back panel 29, an upper back panel 3Q, a top panel 31, an upper front panel 32., a plurality of frontcenter panels 33 and 3l and a bottom front panel The ends of the oven are closed by a plurality of end panels,r the right halt' panel at each end being substantially iden tical and comprising a panel member 36. Th'e lefthalf panels at each end are substantially alike. comprising a panel member 3T, both the panel members' 36' and 3T being adapted 'to cooperate 'with each other to form amemberof substantially the same contour'as thatof the end franies'lO. y

The *front center panels 33, and., 314 are 'spaced apart to forman opening Efor a' door 38 `which is provided with .hinge 'members 39. a handle? member 10` andrea counter- Weight "11 which is adjustably"mounted on a bar -lZ secured against the V4inside'of the door panel 38. The `location and "Weight o f the member l1 is such as to substantially balance the weight ofthe door panel 38 in FigsQl. 5 and 6 illustrate.` in detail. ythe construction of 'the'bot'tom'back panel and.

asy the other v side panels are'fof substantially similar construction. it is believed that a description of' thef other'pa'nel l is unneces-` sary.l The paneltQS comprises a top 'plate 43 which i'sformed with integral. angularly .return-bent side'and endportions -llfand a bottom plate lol which is also provided with lsingularly. ret'urn-bentfside and end portions 46. the portions -ll and i6 being adapted to operatively' engage each other over a portion of their ividth. This construction provides a hollow-double-wall panel member iihich is lledI vivit'h laysuitable heat-insulatingmaterial 4T.' such as mineral Wool. which may be so cut as to lit y'snugly within the double- Wall lstructure herembefore described.`

Means for -spacing apart'tlie plates -13 and 45 comprise a plurallty of members 1S lsubstantially ofchannel section.' The top sheet 43 vmayl be secured to the channel members'lSv by means of a plurality of "In Aconstructing the panels. they channel members 48 are secured to the 4top sheet 4.3 as above described. then the heat-Insulating material 4:7 `may be placed in position. after which the .bottom/'sheet 45I may beplaced in position on the top sheet43. vThe overlapping edgesel-L v and lr6 are secured together by means of a `pluralityot' v'screws 0, the same means .being` employed to secure the .sheet 43H against ythe channel members 48. e 'l ,f Q

A plurality ofl openings `51 are provided .through the panel to permit ofpassing bolts throudh the panel to secure the 'same against L the end frames 10. hereinbeforel described.

of a plurality of members 48 of channel section, only one such member is employed, but a plurality of relatively short members 54, substantially of channel section, are employed and are located in spaced relation in each of the panels, otherwise the con1 struction is identical with that heretofore described.

A recess 55 in the'inner edge of the panel member 36 and a recess 56 in the inner edge of the panel member 37 cooperate to form an opening, in which the bearing of the reel mechanism is located, the dimensions and contour ofthe opening being .such as to closely surround the bearing, to preventy the escape of heated fluid from the interior of the oven. Y A i The bevelled edges of the panel member 36 extend parallel to each other, while the bevelled edges of the panel member 37 eX- tend angularly to each other, the relation of these panels to each other, and to the side panels being substantially as illustrated la Fia'. 11. i

As ahas hereinbefore been described, the panels are securedto the end frames 10 by means of a plurality of bolts 52 which are located in the openings 51. The dimensions of the panels are so selected that theedges do not operatively engage each other but leave a'` space 57 which may be filled with a strip 58 of a suitable heat-insulating material.

In order that the adjacent edges of the double-wall panel members may be caused to approach'each other to the fullest eX- tent allowed by the bolts 52 securing the panels against the end frames 10, further provision is made comprising a plurality of bolts 59 angularly disposed relatively to the flat surface of the panel members 30 and 32 and adapted to engage, at their inner ends, the angle members 13. Hook bolts 60 are provided to draw the upper edge of panel member 29 towards the bottom edge of panel 3() the upper edge ofpanel 33 against the bottom edge of the panel 32 and the upper edge of panel 28 against the bottom edge of the panel 29. Bolts 61 are provided adjacent the bottom edge of panels .28 and 35 angularly disposed relatively to the flat surface of the panels, and adapted. to operatively engage, at their inner ends, with the angular members 12 to draw the lower edges of the panels tightly against the end frames l0. l e l The surface of each of the panelsisfc'overed with a white enamelled panel member 62, each of which is ofsuitable contour to cover substantially the entire outersurface of the panel.

A plurality of finishing strips 63 are located to cover' the adjacent edges of the panels and particularly ofthe white-enamel panel members 62 to present apleasing and linished appearance to the structure.

In building'up the entire oven structure, they base frame hereinb'efore described, may be`built up first and the bottom panel 5 placed in its proper operative position"l -T he end frames 10 may now be placed thereon and bolted thereto by means of the `bolts 9a, and the members 12, 13 and 14 may be suitably bolted to the'end frames 10. lThe entire reel mechanism, comprising the shaft 16, the reel frame 17 and the associated trays 19, may be placed in position. The bottom panels 28 and 35 may be'placed in position and bolted on, after which the p'anels 29, 34, 33', 30, 32 and 31 may be placed in position in the' order" namedl and be secured by bolts, ashereinbefore described. The end panels 36 may be placed fin position,4 after which thepanels 37l may be placed in position and bolted.

The heating elements 24 may be placed in position before the panels 28 and ,35 are mounted or they may be placed in position after all of the panels have been bolted inplace.--l

After all of the bolts holding the panels -against the 'end frames have been placed in position and tightened, the Vpanels 62 may scribed, including the motor 20, mounted on the bracket 21, may be placed in position and suitably adjusted.

The door panel 38 and its associated counterweight 41 may now be placed in position.

It may be noted that the vdevice embodying my invention provides a reel-type bake oven comprising a plurality of frame and of panel members which may be assembled in the factory to form a complete oven. This oven may be shipped as a complete unity and may be moved to its operating position as such, but, if the opening provided is not suficiently large to permit of passing the oven therethrough, it may be disassembled as follows: remove a portion of the finishing strips and the to and end panels. Remove the bolts 11 and t e bolts 9a, after which one- .halt of the end frame l0, at each end ot the oven, together with the associated panels,

comprising. respectively, the panels 2S. 29 and. 30, or the panels 32, 33, 34. and the door 38 may be removed from the bottom panel and the base traine, it being understood that the reel mechanism is disassembled to whatever extent is necessary to permit of moving itthrougl'i the opening provided. The basev frame and the bottom panelinay then be moved through the opening as a unit. as well as each lialf-eiitl-frame structure. yvitli the bolted side panels. The parts may now be reassembled as liereinbefore described, after which the oven is ready for operation. i

My improved invention thus provides i equally removable panels which may be removed independent of each othervvvhenevei` this becomes necessary'or desirable. My oven further provides abuilt-up heat-insu- 'lated structure of relatively light Weight,

perii'iitting ot' its being transported as al unit. l v i arious modifications may be made in the device embodying 4my invention'wvithout departing tromthe spirit and scope thereof. and I desire that only such limitations shall be placed thereon as are imposed by the prior ait or are specifically set forth inthe appended claims.

I claim as my invention:

1. A reel-type bake oven comprising a reel mechanism in said oven. a supporting frame.

end frames, a double-wall bottoni oven panel located on said supporting frame and a' plui-alty of members ot substantially channel shape in said bottoni panel tor spacing aiart the walls thereof. certain ot' said incmlaeis being adapted tosupport said end.. frames and reel mechanism. l

3. A bake oven comprising a ypair of end trames. nieinbers for spacing said end frames apart. a pluralityy ot' top. sideand end panels operatively associated with said endft'raines and spacing nieinbers. means associated with each ot' said panels for drawing said panels closely against said end Jframes and said spacing members. a supporting traine. afbottoni panel located on said supporting traine,

and a plurality ot' inenibers in ysaid bottoni y panel for supporting the weight ot' said end frames. spacing members. topQside and end panels. y i

-l. A bake oven comprising a pair of end t'ranies. ymembers for spacing said end frames apart.a supporting frame, a bottoni panel locatedA on said supporting .t'raine. nieans for securing said end trames and boitoiii panel to said supporting traint-.and a. plurality of epd. top and side panels adapted to be secured to said end trames and independently removable therefrom.

A.. bake oven comprising pair of' end frames. members for spacing said end trames apart, a supporting traine. va double-Wall bottoni panel having .beveled edges and se-i cured to said supporting frame. a plurality of double-wall side. top-anden'd panels each having beveled edges and adapted to be secured to said end frames in such manner as to cause certain edges of said janels t'ooperatively engage each other. and means for securing saidpanels to said end frames.

In testimony whereof. I have hereunto subscribed my naine this 15th day of June, 1921.

JAMES C. IVOODSON. 

